Origin
Lunella is a young girl living in America. She seemed just a regular young girl, but actually is part of an ancient race known as the Inhumans and she is one of the smartest people on the planet!
Creation
Lunella Lafayette (Moon Girl) was created by Amy Reeder-Hadley, Brandon Montclare and Natacha Bustos and first appeared in Moon Girl and Devil Dinosaur issue 1 (2016).
Major Story Arcs
Befriending a Dinosaur
Luna noticed on a very early age that she was smarter then most people. While her parents tried to help her find changlenges for her intellect, she was soon borred in her school-class, but managed to make some friends while there.
It was then that Luna noticed a strange connection between her and a giant red Dinosaur named Devil Dinosaur that appeared suddenly.
Other Media
Games
Marvel Future Fight

Moon Girl is a playable character in the game. She is a blast type.
Her bio in the game says: Through just a small child, Lunella Lafayette is the smartest person on Earth. As a human and Inhuman hybrid, Luna possesses vast intelligence and a knack for inventing strange gadgets. After creating her latest invention, the Omni-Wave Projector, Luna opens a portal to Dinosaur World and befriends the monstrous Devil Dinosaur, who aids her in her adventures. Exposure to the Terrigen Mist strengthens the bond between Luna and Devil Dinosaur, as her latent Inhuman powers allow her to swap consciousness with the gigantic beast.
Marvel Avengers Academy

Moon Girl is a playable character in the game. She was introduced during the “Monsters Unleashed Event”. Her recruitment quest is Get Moon Girl!.